When Huang Qiangmin came to the medical examiner's office, his head was still a little raw.
He asked Jiang Yuan to do the backlog, but the general process for doing the backlog was really not like this.
To put it more realistically, if the provincial department now carries out a "100-day backlog attack operation" or the like, by the end of the operation, some of the backlog cases prepared in advance will not be activated.
The criminal suspect will not cooperate with your police actions.
And the current cases have become backlogged cases, which always have some difficulties.
Even if it doesn't, it should be there after it becomes a backlog.
Therefore, there are almost no things that can be missed from the backlog.
Those who work as criminal policemen always complain about the backlog of cases. In some places, being assigned to check backlogs is as painful as being forced to wear tiny shoes.
It's actually quite painful.
It's like a salesperson who encounters a customer and can't get it done by all means. At this time, can another salesperson solve the problem? There is a high probability that it still won’t work out – this is a regular sale.
Huang Qiangmin is indeed optimistic about Jiang Yuan's ability, but Huang Qiangmin still doesn't quite understand that Jiang Yuan started making noises just half a day after he came back.
Normally, it would take several months to open up wasteland for large livestock. Why don't we waste some feed, waste some labor, and toss for a while before we can get results?
Isn’t it normal for it to take three to five months to start a murder backlog?
If it can be done in just a few hours, do they have cat cakes and put them on the backlog?
It's not steak, it can be aged.
"What clues did you find?" Huang Qiangmin still had a serious face when he entered. Although I am indeed still very curious, the dignity of the captain must also be guaranteed.
If leaders lose their dignity, how can they manage their subordinates?
"Jiang Yuan found it, let him tell you." Wu Jun refused to take credit. He doesn't have to think about the issue of dignity. He has already settled the treatment of his minor subjects and has nothing to desire before he retires.
While Jiang Yuan was waiting for someone, he had already prepared the pictures and directly made them into PPT. At this time, he turned around and said, "It's the 611 He Jingqin case from 13 years ago..."
"Oh, I remember, the scene was full of blood."
"Yes, I did an on-site reconstruction based on the blood stains." Jiang Yuan operated the PPT with his left hand and made slight gestures with his right hand.
Wu Jun was smiling across from him. Hearing this, he was surprised: "When did you do the on-site reconstruction?"
"When I was doing PPT, I did it by the way." Jiang Yuan replied.
Bloodstain analysis is a high-end thing, and to play it well, you need to be at LV3 level.
However, for Jiang Yuan, who mastered blood stain analysis at LV5, reconstructing the scene was very basic.
I have seen all the pictures that need to be seen, and all the necessary information is available. It is a process of integrated analysis.
Jiang Yuan did not hesitate. He first showed a few photos and then said: "I will not go into details about the investigation of the crime scene and the examination report of the body. I will directly talk about the reconstruction of the crime process."
"Based on blood stain analysis, the murderer's crime process can be divided into four parts."
"Part One. The murderer held the victim hostage, and started injuring the victim with a knife for the first time at the fire door. There were superficial scratches on the victim's arm, and he probably performed low-intensity defense here. The blood stains left on the wall behind may have been caused by pushing. The main basis is: A. The blood stains formed by flowing from top to bottom on the front of the victim's jacket. B..."
"Part 2. The murderer held the victim hostage to the rooftop. The victim probably understood the murderer's purpose, and then resisted more fiercely, possibly accompanied by shouting. The murderer held a knife in his right hand and scratched the fatal wound from left to right. , the wound was on the victim's neck, resulting in a splatter-like blood stain... Then, the murderer dragged the victim into the rooftop, causing drag injuries and a certain degree of resistance... The main basis..."
"Part 3. The murderer stabbed the victim again on the rooftop, causing the victim's death. Main basis: A, dripping blood stains... B, formation of pool of blood... C, victim's footprints... D , after the victim fell, splatters of blood appeared again..."
"In the fourth part, the murderer began wiping and cleaning the scene. Mainly cleaning up the large pool of blood on the ground and closing the door to the rooftop. I think this was to cover up the crime scene and avoid premature discovery. It is inferred that after the murderer committed the murder, the first thing he considered was to run away. The main basis is..."
Huang Qiangmin was stunned.
The captain of the county's criminal police brigade is here.
Looking at the photos, it was like seeing them with his own eyes, describing the on-site reconstruction of the criminals' actions. He had also watched performances before.
"Where did you learn this..." Huang Qiangmin really couldn't understand.
Jiang Yuan was silent for two seconds and said, "When I was studying, I liked to think about these things."
"Then you've really figured out something." Huang Qiangmin didn't know what to say. It's like the lead cow came out to work, but it ended up doing all the work of a production team. So as the captain of the production team, what should he do now? "
Jiang Yuandao: "I read the previous files, mainly looking for the murderer based on the victim's family background. I think that by changing the investigation angle, there may be a chance to solve the case..."
"An ex-convict who ran away after committing a crime? This range is also very large." Huang Qiangmin instinctively looked for loopholes.
The backlog of murder cases has been started, and several police officers may have to be put in in the blink of an eye. It can take several months to solve the case, and preliminary arguments are indispensable.
Jiang Yuan then explained the previous body shape judgment based on the footprints, and then said: "I think we can narrow the scope a little first. If it doesn't work, we can expand the consideration."
"How to shrink?"
"I think it can be assumed that the murderer has a history of sexual crimes and was released for a short period of time, such as one or two months, no more than three months. Then, he ran away very quickly and should have left on the same day. , no more than the next day.”
"Why is the release time so short?" Huang Qiangmin thinks this question is the most important.
There are only a few prisons in the province, and considering the criminals from Ningtai County, the number of sex offenders released after serving their sentences in the three months before the incident was probably very small. If not, just a few people.
Among such a small number of people, if you find someone between 25 and 30 years old, the number will be even smaller.
After Jiang Yuan considered his words, he turned off the PPT, found a few more photos, and said: "From my understanding of the crime scene, the murderer's tidying up behavior was relatively calm. But his actions, I think he is a little eager and a little unfamiliar. That is... he is very courageous and confident in the process of committing crimes, but he is also anxious..."
What Jiang Yuan described at this time was already an overall judgment, rather than a separate point-to-point judgment: "I think this time is the first time the murderer committed a crime after being released from prison, so it is particularly special... Impatient."
Huang Qiangmin understood. Although he himself didn't know much about blood stain analysis, Jiang Yuan had already analyzed it to this extent, so Huang Qiangmin had no choice but to believe it.
"You investigate first. See how far we will go. I'll find two people for you." Huang Qiangmin thought for a while, then called Wei Zhenguo over.
In this case, if Jiang Yuan had found fingerprints or DNA evidence, Huang Qiangmin would have immediately set up a task force.
But for blood stain analysis, Huang Qiangmin wanted to send two scouts out first.
This is also a general operation in the criminal police team. It can only be said that it is not special for Jiang Yuan.
This is what Jiang Yuan wanted. When Wei Zhenguo came over, the two discussed it and started making phone calls.
Prisons are managed by the judicial system, especially prisons outside the province, which are more troublesome.
But this trouble didn't last long.
Two days later.
A list of only 8 people was placed on Huang Qiangmin's desk.
"Are there just a few suspects?" At this moment, Huang Qiangmin's level of attention was instantly raised.
Jiang Yuan nodded and said: "I think the first four people on this list are the most likely ones. The last four people could have been screened out first and waited to see. But Captain Wei believes that there is no need to limit the scope so narrowly... …”
"Old Wei is right. Wait until I call someone over." Huang Qiangmin stopped approving the documents at hand and directly called the back office to call someone.
While waiting for others, Huang Qiangmin said: "The list of suspects in the backlog of murder cases, 8 people are nothing, 80 people can be investigated directly. In this kind of case, we are not afraid of alerting the snake. With 8 people, we have enough manpower. …”
"Yes." Jiang Yuan has also experienced several interrogations and arrests, and knows what the situation is like.
The police are not playing games when handling cases. They do not say that they have everything ready and can filter out the only result.
The four squadron leaders and team mates were called over at once and went directly to the conference room.
"Jiang Yuan, you will brief everyone on the case later." Huang Qiangmin said and got up and went to the conference room.
Jiang Yuan is also ready.
No matter whether you arrest 8 people or 4 people, the specific circumstances of the case must be informed to the executing police. Arresting is always risky, and necessary information needs to be provided.
Jiang Yuan arrived in the conference room, released the PPT again, and reconstructed the crime scene more completely while operating it with one hand.
Compared with the time he explained to Captain Huang Qiangmin, Jiang Yuan was better prepared this time and his story was more complete.
Several team captains and team deputies were also veteran detectives, but after listening to Jiang Yuan's case report, they could not speak for a long time.
"Will all future cases be like this?" After a long time, Comrade Wu Junhao of the No. 1 Squadron couldn't help but speak.
"Of course it's impossible." Liu Wenkai, the captain of the Second Squadron, sighed and said, "No matter how good Shang K is, he won't steal Fenglou's market. Don't worry."
Everyone inexplicably agreed and felt a little bit of peace of mind.
(End of chapter)
